Transcript Memory - So How do we know?

Memory
Where would we be without memory?
How do we know without memory?
Is
memory
a WOK?
The importance of memory can be
highlighted by imagining the
challenges that would be presented by
losing our memory.
DISCUSSION: What do you do to remember things? Does your memory of these events
change because of the ‘souvenirs’ you create?
What do you remember well? What do you tend to forget easily?
And if we forget?
TASK: think of your most distant childhood memory
Childhood amnesia
General inability of people
to remember specific
events from the early
years of their lives
The average age of the earliest
memory reported is about 3.5
years old. Yet, women tend to be
able to go back a bit further.
Freud explained childhood amnesia (and
almost everything else) by sexual repression
Some theories suggest that
children’s brains are not equipped
to store memories because there
are not enough connections
between the brain cells and the
memory storage areas are
immature.
Some theories suggest that because cognition is
influenced by language, we don’t remember this
pre-linguistic stage. Maybe the memories are
stored in a form we can’t access anymore.
http://www.theguardian.com/science/2013/sep/29/chimp-intelligence-aymu-matsuzawa-kyoto
http://www.youtube.com/watch?v=JkNV0rSndJ0
"We've concluded through the cognitive tests that chimps have extraordinary memories,"
Matsuzawa says. "They can grasp things at a glance. As a human, you can do things to
improve your memory, but you will never be a match for Ayumu."
The answer lies in evolution, says Matsuzawa. As humans evolved and
acquired new skills – notably the ability to use language to communicate
and collaborate – they lost others they once shared with their common
simian ancestors. "Our ancestors may have also had photographic
memories, but we lost that during evolution so that we could acquire new
skills," he says. "To get something, we had to lose something.“
For the chimps, the ability to memorise the location of objects is critical to
their survival in the wild, where they compete for food with other, often
aggressive, ape communities. To thrive, an individual chimp must be able to
look up at, say, a sprawling fig tree and quickly note the location of the ripe
fruit.
Visual memory versus other types of memory.
DISCUSSION: What is the link between language and memory?
How reliable is our memory?
Elizabeth Loftus at TED (the fiction of memory):
Contamination of memory through
misinformation
The misinformation effect
Language and
memory
“We can change each other’s memory” (Loftus)
FALSE MEMORIES
DISCUSSION: Have you ever had a false memory (which you are aware of)? Do you
think you may have had a false memory planted into your head at some stage?
Do you
sometimes have a
memory of
yourself which
includes the
visual image of
yourself as if you
were seen by
someone else?
Do you
reconstruct the
memory of your
life story?
My own (false)
photographic story
Facebook: what will it do
with your memory?
Better
looking?
more
popular?
More
exciting?
funnier?
Suggestion in(bad)
psychotherapy
False memories were planted by psychiatrist on Cool
(1986)
Success rate for planting
false memories
Nearly
drowned:
50%
Attacked by a
dog:50%
You witnessed
demonic possession
Lost in
shopping
mall: 25 %
How false memories change
your behaviours
Disgust
Or appetite?
Discussion: what are the ethical implications of such memory experiments?
•Would you implant false memories in your children to make them eat vegetables?
•Is there any situation in which we could justify planting false memories?
•Could we justify planting false memories from a utilitarian point of view?
The abuse of memory in the world
Pre-Raphaelite art
Our memory of
colonisation
Link
to
AOK
The Aryan Myth
See Curtis’s
‘The Living
Dead’ epsiode
1 (website)
Discussion: can you find other real-life
examples where memory is/has been
abused around the world?
CIA interest in leading ‘memory psychologists’
during the Cold War era.
• CASE STUDY: Tabula Rasa therapies by therapist Cameron
• For full documentary: See Adam Curtis: The living dead,
episode 2, 19.25mins – 23mins.
website: www.sohowdoweknow.weebly.com)
Memory and sense perception (WOK)
Proust: ‘A la recherche du temps perdu.’
Emotions and memory (WOK)
Emotional events are
often memorable
Emotions from the past may
influence your judgements today
Discussion: can you find
examples of your own life of such
memories?
Flashbulb
memories (what
you did on 09/11)
Science, technology and memory
(AOK)
http://www.inference.phy.cam.ac.uk/jmb86/memory.pdf
Neuroscience and
psychobiological research on
the mechanics of memory
Memory research through technology
The field is a fertile frontier where modern tools—
computers and functional magnetic resonance
imaging—open new windows. Using fMRI, one group
of researchers found that thought patterns used to
recall the past are strikingly similar to those used to
imagine the future.
In another, researchers scanned the brains of people
who had watched short films repeatedly, until the
memories were fully encoded, or stored, in the brain. A
computer analyzed the scans as the participants
recalled the films. Not only could researchers predict
which movie was being recalled, but they found that
the patterns of brain activity among different
participants were “incredibly consistent.” (University of
Virginia)
Memory and our sense of self
• Memory and identity
• Who we are, where we came from
• Memory and cultural identity
DISCUSSION TASK: Which knowledge
questions could you come up with based
on this lecture?
PLENARY
Memory, and particularly habit, has a strong link to procedural
knowledge and remembering how to perform actions. In contrast
to perception, memory refers to things which are not currently
happening. And in contrast to imagination, memory refers to
things which we believe really happened. Some would argue that
memory is not itself a source of knowledge, but instead is a
process which we use to recall knowledge gained in the past.
However, although memory refers to knowledge gained in the
past, it can be argued that even new knowledge is dependent on
and influenced by memory. For example, how we interpret new
situations can be heavily influenced by experience and previous
events. In this way, apart from being a “storage unit” for existing
knowledge, memory can also be a mechanism that allows us to
process new and unique situations.
Many discussions of knowledge tend to focus on how
beliefs and knowledge are formed rather than on how
they are remembered by the individual. However,
most of the knowledge that individuals have is in the
form of memory and therefore how we retain
information and how past events and experiences are
reconstructed is an important aspect of how personal
knowledge is formed.
Because so much of our personal knowledge is in
the form of memory, issues surrounding the
reliability of memory are also crucial.
Memory retrieval is often regarded as unreliable,
for example, because it is seen to be subjective or
heavily influenced by emotion.
See documentary: ‘The mystery of memory’
(scientific explanation, the effects of emotion on memory)
Memory
• Can we know things which are beyond
our personal present experience?
• Is eyewitness testimony a reliable source
of evidence?
• Can our beliefs contaminate our
memory?